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感謝國家自然科學青年基金、陜西省普通高校青年杰出人才計劃，陜西省自然科學基礎研究計劃、陜西省高校科協青年人才托舉計劃項目對本工作的資助。
文章題目：
Self-recoverable, Stretchable and Sensitive Wearable Sensors Based on Ternary semi-interpenetrating Ionic Hydrogels
文章摘要：
Self-recoverability and stretchability are critical for high-performance hydrogel sensors but it is a challenge to develop hydrogels with integrated self-recoverability and stretchability. Herein, self-recoverable, stretchable and sensitive wearable sensors have been achieved based on ternary semi-interpenetrating ionic (TSII) hydrogels. Covalently cross-linked polyacrylamide (PAM) network reinforced by carboxylate cellulose nanofibril (c-CNF) is designed as the recoverable framework. Ternary semi-interpenetrating network is constructed by simultaneously introducing polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP). Because of the ternary semi-interpenetrating structure, the resulting PAM/c-CNF/(PVA-PVP) hydrogels exhibit improved stretchability and self-recoverable properties. Hydrogel strain sensors with a sensing range of 0~750%, a gauge factor (GF) of 5.51, low response time (~140 ms) and excellent stability (>1000 cycles) have been fabricated utilizing the ionic hydrogels and wireless strain sensors have also been demonstrated by integrating the sensors into a Bluetooth signal transmission and reception system. Moreover, TSII organohydrogels are further developed by introducing a binary solvent of glycerol/water. The organohydrogels exhibit inherent adhesiveness even at -20 oC and can be applied in sensitive capacitive pressure sensors (GF=0.97 kPa?1). Finally, various strains and pressures in daily life are monitored by the flexible sensors.